依赖
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
配置文件
<c3p0-config>
<named-config name="c3p0">
<property name="driverClass">com.mysql.jdbc.Driver</property>
<property name="jdbcUrl">jdbc:mysql://localhost:33xx/xxx</property>
<property name="user">xxx</property>
<property name="password">xxxxx</property>
<property name="acquireIncrement">5</property>
<property name="initialPoolSize">5</property>
<property name="minPoolSize">10</property>
<property name="maxPoolSize">40</property>
<property name="maxStatements">200</property>
<property name="maxStatementsPerConnection">5</property>
</named-config>
</c3p0-config>